in syria, rebel fighters gained more momentum in the east today. they seized a key army base at mayadeen and took control of its artillery stockpiles. to the north, syrian government warplanes flattened a building next to a hospital in aleppo overnight. at least 15 people were killed. the airstrikes damaged one of the last remaining sources of medical aid for civilians there. a taliban suicide bomber killed 23 people in a procession of shi-ite muslims in pakistan. the attack happened near midnight when the bomber tried to join a religious gathering in rawalpindi. at least 62 people were wounded, including six policemen. this is the latest in a string of bombings targeting shi-ites during their holiest month of the year. the u.s. ambassador to the u.n. defended her first account of the attack on the consulate in benghazi, libya. susan rice has come under fire by critics who say she gave misleading information about the nature of the attack and the motive behind it. but at the u.n. in new york last night she said that was not the case. >> when discus